Hey guys,
I tuned a Ford Focus RS for the first time this past weekend, had a very positive experience and result on the car. My question, do any of you guys know how much boost the 2.3L in the RS can take on the stock turbocharger? I have it dialed in at a max boost of 24.5-25psi. I have seen some reviews of Cobb tuning base maps being around 25.5 psi and Mountune around 27psi. I will be testing 26-27psi soon to see if there is positive result without any negative effects. The car has an aftermarket intercooler and it does a very good job. Any help would be appreciated.
~Kris